【摘要】 采用SnO₂石英玻璃组装的光透薄层电解池,结合紫外可见光谱现场监测技术,研究了靛蓝胭脂红水溶液的电化学还原与氧化过程.测定了不同pH下的式电极电位（E⁰）和电子转移数（n）.实验结果表明,靛蓝胭脂红在SnO₂电极上的还原为准可逆的两电子转移过程,而它的氧化则为不可逆电极过程.由电解现场检测的光谱,初步探讨了电解还原与氧化的反应机理。更多还原

【Abstract】 The mechanisms of electrochemical reduction and electrochemical oxidation ofIndigo Carmine were investigated by means of thin-layer spectroelectrochemical tech-nique at a SnO₂-quartz optically transparent electrode cell. The formal potentials and electron transfer numbers of the reduction of IndigoCarmine were determined at different pHs. The results showed that the reduction ofIndigo Carmine at SnO₂ electrode is a quasireversible two-electron transfer processand its oxidation is a irreversible electron transfer process. The mechanisms of theelectroreduction and electro-oxidation were discussed on the basis of the spectrumrecorded in situ during the electrochemical process.更多还原